// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "src/unoptimized-compilation-info.h"

#include "src/ast/ast.h"
#include "src/ast/scopes.h"
#include "src/debug/debug.h"
#include "src/isolate.h"
#include "src/objects-inl.h"
#include "src/parsing/parse-info.h"
#include "src/source-position.h"

namespace v8 {
namespace internal {

    UnoptimizedCompilationInfo::UnoptimizedCompilationInfo(Zone* zone,
        ParseInfo* parse_info,
        FunctionLiteral* literal)
        : flags_(0)
        , zone_(zone)
        , feedback_vector_spec_(zone)
    {
        // NOTE: The parse_info passed here represents the global information gathered
        // during parsing, but does not represent specific details of the actual
        // function literal being compiled for this OptimizedCompilationInfo. As such,
        // parse_info->literal() might be different from literal, and only global
        // details of the script being parsed are relevant to this
        // OptimizedCompilationInfo.
        DCHECK_NOT_NULL(literal);
        literal_ = literal;
        source_range_map_ = parse_info->source_range_map();

        if (parse_info->is_eval())
            MarkAsEval();
        if (parse_info->collect_type_profile())
            MarkAsCollectTypeProfile();
        if (parse_info->might_always_opt())
            MarkAsMightAlwaysOpt();
        if (parse_info->collect_source_positions()) {
            MarkAsForceCollectSourcePositions();
        }
    }

    DeclarationScope* UnoptimizedCompilationInfo::scope() const
    {
        DCHECK_NOT_NULL(literal_);
        return literal_->scope();
    }

    int UnoptimizedCompilationInfo::num_parameters() const
    {
        return scope()->num_parameters();
    }

    int UnoptimizedCompilationInfo::num_parameters_including_this() const
    {
        return scope()->num_parameters() + 1;
    }

    SourcePositionTableBuilder::RecordingMode
    UnoptimizedCompilationInfo::SourcePositionRecordingMode() const
    {
        if (collect_source_positions()) {
            return SourcePositionTableBuilder::RECORD_SOURCE_POSITIONS;
        }

        // Always collect source positions for functions that cannot be lazily
        // compiled, e.g. class member initializer functions.
        return !literal_->AllowsLazyCompilation()
            ? SourcePositionTableBuilder::RECORD_SOURCE_POSITIONS
            : SourcePositionTableBuilder::LAZY_SOURCE_POSITIONS;
    }

} // namespace internal
} // namespace v8
